On Mon, Feb 27, 2017 at 7:02 PM, Fred at Nimble Books <wfz@nimblebooks.com> wrote:

for a wikimedia wiki -- but I need to do it programmatically. any citation format is ok.

Just fetch the revision ID and last edit date from the API and generate the citation yourself. The template [1] used by English Wikipedia is simply

@misc{ wiki:xxx,

author = "Wikipedia",

title = "<page name> --- Wikipedia{,} The Free Encyclopedia",

year = "<year of last edit>",

url = "\url{https://en.wikipedia.org/w/index.php?title=<page title>&oldid=<revision id>}",

note = "[Online; accessed <current date>]"

}